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Product Overview:

LCD driver MCU for remote controller applications, featuring a built-in carrierwave generating function, power-on reset, and voltage drop detection circuit.Maximum oscillation frequency is 6MHz. Comes in a 52-pin package. QzROMversions available.

4500Series QzROM

 

Key Features:

  • Minimum instruction execution time : 0.5 µs (at 6 MHz oscillationfrequency, in high-speed through-mode)
  • Supply voltage : 1.8 to 5.5 V (It depends on operation source clock,oscillation frequency and operation mode)
  • Timers
    • Timer 1 : 8-bit timer with a reload register and carrier wave outputauto-control function
    • Timer 2 : 8-bit timer with two reload registers and carrier wave generationcircuit
    • Timer 3 : 16-bit timer (fixed dividing frequency)
  • Interrupt : 4 sources
  • Key-on wakeup function pins : 17
  • I/O port : 22
  • Output port : 3
  • LCD control circuit
    • Segment output : 32
    • Common output : 4
  • Voltage drop detection circuit
    • Reset occurrence : Typ. 1.7 V (Ta = 25 degrees C)
    • Reset release : Typ. 1.8 V (Ta = 25 degrees C)
    • Skip occurrence : Typ. 2.0 V (Ta = 25 degrees C)
  • Watchdog timer
  • Power-on reset circuit
  • Clock generating circuit
    Built-in clock (on-chip oscillator)
    Main clock (ceramic resonator/RC oscillation)
    Sub-clock (quartz-crystal oscillation)
  • LED drive directly enabled (port D)

Key Applications:

Remote control transmitter

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